oj.uz

답안 #108953

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
108953 2019-05-03T10:32:49 Z boatinw99 늑대인간 (IOI18_werewolf) C++11
100 / 100
 3550 ms 121588 KB 
/**
 *      Author : boatinw99
 *      Date : 3.5.2019 15:42
 */

#include "werewolf.h"
#include<bits/stdc++.h>
using namespace std ;
typedef pair<int,int> pii ;
#define fi first
#define se second
const int N = 2e5+9 ,inf = 1e9 ;
struct Q
{
    int st,ed,l,r,idx ;
}query[N];
unordered_map<int,int> mp[N];
vector<int> memb[N];
pii edge[N<<1] ;
int n,m,q,p1[N],p2[N],sz[N],up[N];
int find(int u)
{
    while(p1[u])u=p1[u];
    return u ;
}
void Union(int u,int v)
{
    int mn = min(u,v);
    u=find(u),v=find(v);
    if(u==v)return ;
    if(sz[u]>sz[v])swap(u,v);
    p1[u]=v;
    sz[v]+=sz[u];
    up[u]=mn;
}
void constructdsu()
{
    for(int i=1;i<=n;i++)
    {
        p2[i]=i;
        sz[i]=1;
        memb[i].push_back(i);
    }
    sort(edge+1,edge+1+m,[&](const pii a,const pii b){
        return min(a.fi,a.se)>min(b.fi,b.se);});
    for(int i=1;i<=m;i++)Union(edge[i].fi,edge[i].se);
    for(int i=1;i<=n;i++)
    {
        int node = i , dist = inf ;
        while(node)
        {
            mp[node][i]=dist;
            dist=min(dist,up[node]);
            node=p1[node];
        }
    }
}
void magic_Union(int u,int v)
{
    u=p2[u],v=p2[v];
    if(u==v)return ;
    if(memb[u].size()>memb[v].size())swap(u,v);
    for(auto it:memb[u])
    {
        p2[it]=v;
        int node = it;
        while(node)
        {
            auto its = mp[node].find(u);
            if(its==mp[node].end())break ;
            mp[node][v]=max(mp[node][v],its->se);
            mp[node].erase(its);
            node=p1[node];
        }
        memb[v].push_back(it);
    }
}
vector<int> check_validity(int SZ,vector<int> X,vector<int> Y,
                                vector<int> S,vector<int> E,
                                vector<int> L,vector<int> R)
{
    n=SZ;
    m=X.size();
    q=S.size();
    vector<int> ans(q);
    for(int i=1;i<=m;i++)edge[i]={X[i-1]+1,Y[i-1]+1};
    for(int i=1;i<=q;i++)query[i]={S[i-1]+1,E[i-1]+1,L[i-1]+1,R[i-1]+1,i};
    constructdsu();
    ///Done preprocess
    sort(query+1,query+1+q,[&](const Q a,const Q b){
         return a.r<b.r;});
    sort(edge+1,edge+1+m,[&](const pii a,const pii b){
         return max(a.fi,a.se)<max(b.fi,b.se);});
    for(int i=1,j=1;i<=q;i++)
    {
        while(j<=m&&max(edge[j].fi,edge[j].se)<=query[i].r)
        {
            magic_Union(edge[j].fi,edge[j].se);
            j++;
        }
        int st = query[i].st , ed = query[i].ed , mnup = inf , dist = 0;
        while(st)
        {
            auto its = mp[st].find(p2[ed]);
            if(its!=mp[st].end())dist=max(dist,min(mnup,mp[st][p2[ed]]));
            ///printf("aa %d %d | %d\n",dist,mnup,mp[st][p2[ed]]);
            mnup=min(mnup,up[st]);
            st=p1[st];
        }
        ans[query[i].idx-1]=(p2[query[i].st]==p2[query[i].ed]||dist>=query[i].l);
    }
    return ans ;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 15972 KB Output is correct
2 Correct 18 ms 16000 KB Output is correct
3 Correct 18 ms 16076 KB Output is correct
4 Correct 18 ms 16000 KB Output is correct
5 Correct 18 ms 15960 KB Output is correct
6 Correct 18 ms 16100 KB Output is correct
7 Correct 19 ms 16000 KB Output is correct
8 Correct 18 ms 16100 KB Output is correct
9 Correct 25 ms 16052 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 15972 KB Output is correct
2 Correct 18 ms 16000 KB Output is correct
3 Correct 18 ms 16076 KB Output is correct
4 Correct 18 ms 16000 KB Output is correct
5 Correct 18 ms 15960 KB Output is correct
6 Correct 18 ms 16100 KB Output is correct
7 Correct 19 ms 16000 KB Output is correct
8 Correct 18 ms 16100 KB Output is correct
9 Correct 25 ms 16052 KB Output is correct
10 Correct 30 ms 16984 KB Output is correct
11 Correct 27 ms 16888 KB Output is correct
12 Correct 29 ms 17144 KB Output is correct
13 Correct 41 ms 17040 KB Output is correct
14 Correct 31 ms 17116 KB Output is correct
15 Correct 37 ms 17132 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3550 ms 110492 KB Output is correct
2 Correct 784 ms 82468 KB Output is correct
3 Correct 1026 ms 92676 KB Output is correct
4 Correct 1696 ms 106628 KB Output is correct
5 Correct 1962 ms 109356 KB Output is correct
6 Correct 2575 ms 114472 KB Output is correct
7 Correct 3392 ms 121588 KB Output is correct
8 Correct 707 ms 82580 KB Output is correct
9 Correct 723 ms 92704 KB Output is correct
10 Correct 1253 ms 106548 KB Output is correct
11 Correct 1545 ms 107928 KB Output is correct
12 Correct 2684 ms 114444 KB Output is correct
13 Correct 677 ms 76744 KB Output is correct
14 Correct 636 ms 76584 KB Output is correct
15 Correct 727 ms 76636 KB Output is correct
16 Correct 647 ms 76532 KB Output is correct
17 Correct 3329 ms 119192 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 15972 KB Output is correct
2 Correct 18 ms 16000 KB Output is correct
3 Correct 18 ms 16076 KB Output is correct
4 Correct 18 ms 16000 KB Output is correct
5 Correct 18 ms 15960 KB Output is correct
6 Correct 18 ms 16100 KB Output is correct
7 Correct 19 ms 16000 KB Output is correct
8 Correct 18 ms 16100 KB Output is correct
9 Correct 25 ms 16052 KB Output is correct
10 Correct 30 ms 16984 KB Output is correct
11 Correct 27 ms 16888 KB Output is correct
12 Correct 29 ms 17144 KB Output is correct
13 Correct 41 ms 17040 KB Output is correct
14 Correct 31 ms 17116 KB Output is correct
15 Correct 37 ms 17132 KB Output is correct
16 Correct 3550 ms 110492 KB Output is correct
17 Correct 784 ms 82468 KB Output is correct
18 Correct 1026 ms 92676 KB Output is correct
19 Correct 1696 ms 106628 KB Output is correct
20 Correct 1962 ms 109356 KB Output is correct
21 Correct 2575 ms 114472 KB Output is correct
22 Correct 3392 ms 121588 KB Output is correct
23 Correct 707 ms 82580 KB Output is correct
24 Correct 723 ms 92704 KB Output is correct
25 Correct 1253 ms 106548 KB Output is correct
26 Correct 1545 ms 107928 KB Output is correct
27 Correct 2684 ms 114444 KB Output is correct
28 Correct 677 ms 76744 KB Output is correct
29 Correct 636 ms 76584 KB Output is correct
30 Correct 727 ms 76636 KB Output is correct
31 Correct 647 ms 76532 KB Output is correct
32 Correct 3329 ms 119192 KB Output is correct
33 Correct 1955 ms 88312 KB Output is correct
34 Correct 457 ms 48140 KB Output is correct
35 Correct 1405 ms 79964 KB Output is correct
36 Correct 2149 ms 90436 KB Output is correct
37 Correct 1397 ms 80592 KB Output is correct
38 Correct 2138 ms 87756 KB Output is correct
39 Correct 1715 ms 93740 KB Output is correct
40 Correct 1180 ms 89780 KB Output is correct
41 Correct 1256 ms 81336 KB Output is correct
42 Correct 2058 ms 90272 KB Output is correct
43 Correct 1179 ms 81744 KB Output is correct
44 Correct 1284 ms 80552 KB Output is correct
45 Correct 1317 ms 86740 KB Output is correct
46 Correct 1373 ms 94852 KB Output is correct
47 Correct 633 ms 76876 KB Output is correct
48 Correct 721 ms 76888 KB Output is correct
49 Correct 736 ms 76908 KB Output is correct
50 Correct 706 ms 76756 KB Output is correct
51 Correct 1241 ms 89176 KB Output is correct
52 Correct 1317 ms 89012 KB Output is correct